@article{DE_1979_15_12_a1,
     author = {I. V. Gaishun},
     title = {The {Floquet} representation for equations in total derivatives},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2125--2129},
     publisher = {mathdoc},
     volume = {15},
     number = {12},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_12_a1/}
}